PEARSON ETEXT ENGINEERING MECH & STATS
15th Edition
ISBN: 9780137514724
Author: HIBBELER
Publisher: PEARSON
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If the 50 kg crate starts from rest and covers a
distance of 7.8 meters upward in 4 seconds on a plane,
then find the magnitude of the force P acting on the
chest. The coefficient of kinetic friction between the
crate and the floor is uk = 0.25.
30°
30
The 65-kg crate rests on a horizontal platform for which the coefficient of kinetic friction is µk = 0.28. the crate is subjected to a 500-N towing force.Determine the velocity of the crate in 3s starting from rest and the weight of the crate?
The 56.28 kg crate is hoisted up the 0 = 27° incline by
the pulley system and motor M. If the crate starts from
rest and, by constant acceleration, attains a speed of
8.17 m/s after traveling 7.84 m along the plane,
determine the supplied power to the motor if the crate
has moved 8 m and the coefficient of kinetic friction
between the plane and the crate is Hk = 0.3. Neglect
friction along the plane. The motor has an efficiency
of 0.691.
M
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- The 100 kg crate is subjected to forces F1= 800 N and F2= 1500 kN, as shown. If it is originally at rest, determine the distance it slides in order to attain a speed of v= 6 m/s. The coefficient of kinetic friction between the crate and the surface is Muk= 0.2arrow_forwardThe force F, acting in a constant direction on the 24-kg block, has a magnitude which varies with the position s of the block. When s = 0 the block is moving to the right at v = 6 m/s. The coefficient of kinetic friction between the block and surface is μk = 0.3. Determine how far the block must slide before its velocity becomes 15 m/s. No hand written solution and no imagearrow_forwardThe at-rest crate, which has a mass of 100 kg, is subjected to the action of thetwo forces. Using the principle of work and energy, determine the distance it slides when itreaches a speed of 6 m/s. The coefficient of kinetic friction between the crate and the surface is uk = 0.2.arrow_forward
- If the 200 kg crate starts from rest and travels a distance of 10 m up the plane in 6s, determine the magnitude of force acting on the crate. The coefficient of kinetic friction between the crate and the ground is μ=0.4. 30° P 30°arrow_forwardThe 35-kg crate is subjected to a force inclined to 70° respect to vertical plane having a constant direction and a magnitude F = 150 N. When s = 20 m, the crate is moving to the right with a speed of 10 m/s. Calculate for normal reaction and its speed when s = 30 m. The coefficient of kinetic friction between the crate and the ground is mk = 0.35.arrow_forwardThe crate, which has a mass of 245 kg is subjected to the action of the two forces. If it is originally at rest determine the distance it slides in order to attain a speed of 12 m/s. The coefficient of kinetic friction between the crate and the surface is 0.18 800 N 30° 4 1000 Narrow_forward
- If the coefficient of kinetic friction between the150-lb crate and the ground is uk = 0.2, %3D determine the speed of the crate when t = 4 s. The crate starts from rest and is towed by %3D the 100-lb force. 100 lb 30°arrow_forward6. The 100 kg crate is subjected to forces F= 800 N and F2= 1.5 kN. as shown. If it is originally at rest, determine the distance it slides in order to attain a speed of v= 6 m/s. The coefficient of kinetic friction between the crate and the surface is u=0.2 800 N 1500 N 30 ,20arrow_forwarda 7.4 lb block has a speed of v-2.4 ft/s to the left when the force of F=3.6t^3 lb is applied to the right. determine the velocity and position of the block when t= 0.2 seconds. the coefficient of friction at the surface is uk= 0.2. provide both a free body diagram and a kinetic diagram. the force is being applied in the opposite direction to the velocity of the block.arrow_forward
- The 81-kg crate is subjected to the forces shown. If it is originally at rest, determine the distance it slides in order to attain a speed of v = 8 m/s. The coefficient of kinetic friction between the crate and the surface is uk = 0.27. Forces with respect to 45° and 30° are 611 N and 398 N, respectivelyarrow_forward1. If the 50-kg crate starts from rest and achieves a velocity of v = 4 m/s when it travels a distance of 5 m to the right, determine the magnitude of the force P acting on the crate. The coefficient of static friction between the crate and the ground is u. = 0.3 30arrow_forwardThe 182-kg crate is subjected to the forces shown. If it is originally at rest, determine the distance it slides in order to attain a speed of v = 11 m/s. The coefficient of kinetic friction between the crate and the surface is u = 0.15. %3D 500 N 400 N 30 45 Answer: Checkarrow_forward
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