Then , m=78 kg
g = 9.81 m/s^2
Determine the force P required to (a) raise and (b) lower the 78-kg cylinder at a...
Calculate the horizontal force P required to raise the 95-kg load. The coefficient of friction between the rope and the fixed bars is 0.27. 1.90 95 kg Answer: P =
Calculate the horizontal force P required to raise the 94-kg load. The coefficient of friction between the rope and the fixed bars is 0.45 1.8d 94 kg Answer: P =
For a certain coefficient of friction u and a certain angle a, the force P required to raise m is 3.08 kN and that required to lower m at a constant slow speed is 1.19 kN. Calculate the mass m. Answer: m =
Determine the minimum force P required to move the 50-kg block to the right. The coefficient of static friction between the block and the surface is ui = 0.6 and the coefficient of static friction between the peg and the rope is p2 = 0.3. M2 50 kg
If the applied force P = 250 N, determine (a) the required
minimum compression in the spring so that the wedge will not move
to the right. Neglect the weight of A and B. The coefficient of
static friction for all contacting surfaces (i.e. between B &
A, and A & C) is ? = 0.35. Neglect friction at the rollers.
(b) Draw the free body diagram of object A. (Final Answer =
0.0183 m)
Determine the minimum force, P, required to lift the 200 lb crate. The two wedges are separated by smooth rollers; both wedge surface from 20° angles from a horizontal surface. The coefficient of friction between the wedges and all other surfaces is 0.4. 20° P-
The weights of block A and
cylinder B are W4 = 250 lb and WB = 100 lb. If the coefficient of
friction is 0.35 for all surfaces, determine the maximum force P
required for equilibrium.
74% - პეო
9. Friction & Wedges Determine the minimum force, P, required to lift the 200 lb crate. The two wedges are separated by smooth rollers; both wedge surface from 20° angles from a horizontal surface. The coefficient of friction between the wedges and all other surfaces is 0.4. 20°
0.50. Some jerk controls the height of block B by moving wedge A. The coefficient of friction between all surfaces of contact is 335 kg Determine the magnitude of horizontal force P in newtons required to raise block B. (Neglect the weight of the wedge A.)
PROBLEM 5 The weights of block A and cylinder B are W4 = 250 lb and W3 = 100 lb. If the coefficient of friction is 0.35 for all surfaces, determine the maximum force P required for equilibrium. 30°