A 60 kg parachutist Jumps out of an airplane. What is his acceleration when the

Question

A 60 kg parachutist Jumps out of an airplane. What is his acceleration when the air resistance on him is 300 N.(assume g =10 m/s/s) 2g g/2 0.1g g g/4 Objects with masses m_1 = 15.0 kg and m_2 = 8.0 kg are connected by a light string that passes over a frictionless pulley as In the figure below. If, when the system starts from rest, m2 falls 1.00 m in 1.34 s, determine the coefficient of kinetic friction between m_1 and the table. Two blocks each of mass m = 3.51 kg are fastened to the top of an elevator as in the figure.

Explanation / Answer

Solution:

(a) Solution:

Given data

M = 60 kg

g = 10 m/s2

frictional force from air Fr = 300 N

Net force on parachutist is

Fnet = W - Fr

m.a = m.g - 300

m.a = (60X10) - 300

m.a = 600 - 300

m.a = 300

a = 300/60 = 5

Therefore, acceleration of parachutist is given as

a = 5 m/s2 = g/2

Therefore, option 2 is correct.

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