Two blocks of the same mass, m, are connected by a light string and rest on the slope and in the air, respectively (0<8<90). The friction force on the mass siting on the slope will be m zero upward along the incline the same magnitude with the tension in the string downward along the incline E none of above

The block of weight W is pulled by the force P inclined at the angle to the horizontal. Find the smallest force P and the corresponding angle that would cause impending sliding of the block. The angle of static friction between the block and the ground is s.

The woman is trying to move the crate of weight W by pulling on the rope at the angle to the horizontal. Find the smallest possible tension that would cause the crate to slide and the corresponding angle .

The center of gravity of the 3000-lb car is at G. The car is parked on an incline with the parking brake engaged, which locks the rear wheels. Find (a) the normal forces (perpendicular to the incline) acting under the front and rear pairs of wheels; and (b) the friction force (parallel to the incline) under the rear pair of wheels.

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Q3 (a): A horizontal stick OA of mass 2m has its left P end attached to a pivot O on a plane inclined at an angle 0, while its right end A rests on the top of a cylinder of mass m which in turn rests on the plane, as shown in Fig. The coefficient of friction between the cylinder and both the stick and the plane is u. 2m А m (i) Assuming that the system is at rest, what is the normal force from the plane on the cylinder? (ii) What is the smallest value of u (in terms of 0) for which the system doesn't slip anywhere?

The 25 kg crate A as shown in Figure Q1 rest on the smooth incline plane. At initial position the spring is originally stretched 0.45 m. At the instant shown, the crate is applied with a horizontal force P = 800 N which leads to the motion at final position for a distance of 3 m. (a). Draw the free body diagram of all forces exerted on crate A. (b). Find the total work done by all forces acting on the crate A. (c). Determine the velocity and acceleration of the crate when it reached final position. (d). Calculate the kinetic energy of crate A at final position. Figure Q1 800 N k= 80 N/m Final 3 m Position 30° Initial Position