Calculate the pressure exerted by a girl on the ground if her mass is 50 kg and the area of her shoes in contact with the ground is (a) 150 cm2 (high heels); (b) 400 cm2 (flat
soles). (Take gravitational field strength g= 10 N kg)

What produces a record of seismic waves? richter scale seismogram barometer seismograph

What is relative velocity? in which condition is relative velocity known by adding the velocity of the first body and that of the second body

The 10-kg double wheel with radius of gyration of 125mm about o is connected to the spring of stiffness k = 600 n/m by a cord which is wrapped securely around the inner hub. if the wheel is released from rest on the incline with the spring stretched 225 mm, calculate the maximum velocity v of its center o during the ensuing motion. the wheel rolls without slipping