SPH301 Dynamics
6. A string is tied to a 3.2 kg object on a table and a 1.5 kg object hanging over a pulley. The
coefficient of kinetic friction between the 3.2 kg object and the table is 0.30.
a. Calculate the acceleration of each object. (Ans: 1.1 m/s? [R], 1.1 m/s? [Down])
b. Determine the magnitude of the tension in the string. (Ans: 13 N)
c. How far will the objects move in 1.2 s if the initial velocity of the 3.2 kg object is 1.3 m/s
[right]? (Ans: 2.4 m)
3.2 kg
1.5 kg

A30 kg weight lies on top of a massless piston of area a = 0.01 m2 the exterior air is at a (constant) p =1 atm and t = 27 c. the interior gas is 0.4 moles of (ideal) n2 and it has initial temperature 27.00 degrees c. 1. what is the initial pressure in the interior? a. 29.4 kpa b. 130.7 kpa c. 101.3 kpa the next three questions concern what happens when an amount of heat q is slowly added to the interior, raising the piston by 1 mm and raising the interior temperature to 27.40 c

If the work required to stretch a spring 3 ft beyond its natural length is 15 ft-lb, how much work is needed to stretch it 27 in. beyond its natural length?

Amass weighing 24 pounds, attached to the end of a spring, stretches it 4 inches. initially, the mass is released from rest from a point 8 inches below the equilibrium position. find the equation of motion. (use g = 32 ft/s2 for the acceleration due to gravity.)