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Engineering Mechanics

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A rectangular parallelepiped carries three forces shown in fig. Reduce the force system to a resultant force applied at the origin and a moment around origin.
engineering mechanics updated 5.9 years ago by teamques10 ★ 70k
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State the laws of friction
engineering mechanics updated 5.9 years ago by teamques10 ★ 70k
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Find the necessary force to raise a heavy stone block of 2000 N. Take coeff. of friction as 0.25 for all surfaces. Neglect the weight of wedge. Wedge angle is $15^\circ$.
engineering mechanics updated 5.9 years ago by teamques10 ★ 70k
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Explain angle of friction, angle of repose & relation between the two.
engineering mechanics updated 5.9 years ago by teamques10 ★ 70k
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The mass of A = 23kg & B= 36kg. The coeff. Of friction are 0.4 between A & B and 0.2 between ground & block B. assume smooth drum. Determine the maximum mass of M at impending motion.
engineering mechanics updated 5.9 years ago by teamques10 ★ 70k
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For the block shown in figure, find the minimum value of P, which will just disturb the equilibrium of the system
engineering mechanics updated 5.9 years ago by teamques10 ★ 70k
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A block of weight 1000N is kept on a rough inclined surface. Find out range of P for which the block will be in equilibrium
engineering mechanics updated 5.9 years ago by teamques10 ★ 70k
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Assuming the values for $\mu=0.25$ at the floor and 0.3 at the wall and 0.2 between the blocks.
engineering mechanics updated 5.9 years ago by teamques10 ★ 70k
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Find out min. value of P to start the motion.
engineering mechanics updated 5.9 years ago by teamques10 ★ 70k
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Define angle of friction and angle of repose. Show that angle of friction is equal to angle of repose.
engineering mechanics updated 5.9 years ago by teamques10 ★ 70k
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A ladder AB of length 3m and weight 25kg is resting against a vertical wall and a horizontal floor. The ladder makes an angle 50 degrees with the floor.
engineering mechanics updated 5.9 years ago by teamques10 ★ 70k
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A Paint box weighing 9 kg is kept on a wooden block weighing 1.2kg (fig).
engineering mechanics updated 5.9 years ago by teamques10 ★ 70k
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A ladder of 4 m length weighing 200 N is placed as shown in fig . $\mu_B=0.25$ & $\mu_A =0.35$ Calculate the minimum horizontal force to be applied at A to prevent slipping
engineering mechanics updated 5.9 years ago by teamques10 ★ 70k
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A particle moving in the +ve x direction has an acceleration, $a = 100 - 4v^2 m/s^2. $
engineering mechanics updated 5.9 years ago by teamques10 ★ 70k
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A ball thrown with speed of 12m/s at an angle of $60^\circ$ with a building strikes the ground 11.3 m horizontally from the foot of the building as shown. Determine the height of the building.
engineering mechanics updated 5.9 years ago by teamques10 ★ 70k
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A point moves along a path $= \dfrac {x^2}3$ with a constant speed of 8 m/s. What are the x and y components of its velocity when $x = 3$ ?
engineering mechanics updated 5.9 years ago by teamques10 ★ 70k
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The car starts from rest and moves in a straight line such that for a short time its velocity is defined by $v = ( 9 t^2+2t) m/s.$ Where t is in seconds.
engineering mechanics updated 5.9 years ago by teamques10 ★ 70k
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A curvilinear motion of a particle is defined by $V_X=25-8t$ m/s andy$=48-3t^2$ m. At t = 0, x = 0. Find out position, velocity and acceleration at t = 4 sec.
engineering mechanics updated 5.9 years ago by teamques10 ★ 70k
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Explain x-t, v-t and a-t curves in Kinematics
engineering mechanics updated 5.9 years ago by teamques10 ★ 70k
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A stone is thrown vertically upwards and returns to the starting point at the ground in 6 sec. Find out max, height and initial velocity of stone.
engineering mechanics updated 5.9 years ago by teamques10 ★ 70k
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For a particle in rectilinear motion $a= -0.05 V^2 m/s^2, at \space \space v = 20m/s, x = 0,$ Find x at v = 15 m/s and acceleration at x = 50m.
engineering mechanics updated 5.9 years ago by teamques10 ★ 70k
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A motorist is travelling at 90 kmph, when he observes a traffic signal 250 m ahead of him turns red. The traffic signal is timed to stay red for 12 secs.
engineering mechanics updated 5.9 years ago by teamques10 ★ 70k
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A ball is thrown from horizontal level. Such that it clears a wall 6 m high, situated at horizontal distance of 35 m. If the angle of projection is 600 w.r.t. horizontal,
engineering mechanics updated 5.9 years ago by teamques10 ★ 70k
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A ship A travels in the north making angle of 450 to the west with a velocity of 18 km/hr & ship B travels in the east with a velocity of 9 km/hr.
engineering mechanics updated 5.9 years ago by teamques10 ★ 70k
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In asian games for 100 m event an athlete accelerates uniformly from the start to his maximum velocity in a distance of 4m & runs the remaining distance with that velocity.
engineering mechanics updated 5.9 years ago by teamques10 ★ 70k
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