Figure 2 G 0.75 m B 2 m 1.5 m Figure 2 shows a 2000 kg lorry with a center of mass at G. Starting from rest, the lorry achieves a speed of 15 m/s under a constant acceleration after it has traveled 100 m. The front wheels are free to roll. Q5. What are the assumptions that can be made in this problem? (A) Traction force is due to the rear wheels only (B) The wheels have negligible mass (C) There is no change in gravitational force (D) All of the above Q6. What is the acceleration of the lorry (m/s) (→)? (A) 0.675 (B) 0.908 (C) 1.125 (D) 1.850 Q7. What is the traction force on the wheels at 4? (→) (A) FA 1850 N (B) FA 2250 N (C) FA 2850 N (D) FA= 3150 N

A box of mass m = 0.7 kg is attached to a rope which is wrapped around a physical pulley with a radius of R = 10.2 cm and a rotational inertia of I = 0.075 kg·m2. When the box is released it starts to fall down with a constant acceleration and, at the same time, the pulley starts to spin up, see the picture below. Assuming that the pulley is frictionless, what is the magnitude of the box's acceleration and what is the tension in the rope?   The acceleration of the box, a ? The tension in the rope, T? If the box starts from rest and traveled downwards a distance of h = 28 cm, what is the speed of the box and what is the angular velocity of the pulley? The speed of the box, v =? The angular velocity of the pulley, ω? -------------------------------------------------------------- A Merry Go Round carousel has a radius of R = 2.4 m and a rotational inertia of I = 695 kg·m2. A 75‑kg student is on the carousel at the midpoint between the carousel's center and the rim (at R/2 distance from…

A block having a mass of 60kg is subjected to a force, P =337.5N acting 53 degrees from the horizontal that causes it to have an acceleration of 1.2m/s2. Determine the coefficient of kinetic friction.NOTE: use 3 decimal places

Figure 2 В A Block A is hanging from a massless string which runs over a massless and frictionless pulley and connects to Block B. Block B slides over an inclined plane with ordinary kinetic friction. The plane under block B is inclined at an angle theta = 0 away from vertical. The other side of Block B is connected to another massless string which runs over another massless and frictionless pulley to connect to Cart C. Cart C rolls without friction over a plane which is inclined at an angle of phi = y away from vertical. C