A cable accelerates a 30o o kg mass upward at 5.5 m/s. What is the tension in th

Question

A cable accelerates a 30o o kg mass upward at 5.5 m/s. What is the tension in the cable? a. 2940.0 N b. 4590.0 N c. 1650.0 N d. 3470.0 N An elevator accelerates downward at 1.3 m/s^2 What would the normal force on a 64.0 kg person inside the elevator be? a. 627.2 N b. 83.2 N c. 710.4 N d. 544.0 N A 2.7 gram ping-pong ball is whirled on the end of a string in a vertical circle of radius 0.5 m. If the ball is moving at 9.5 m/s at the bottom of the circle, what is the tension in the string? a. 487.4 N b. 513.8 N c. 0.5 N d. 1.3 N A 65000.0 kg tank falls from rest onto a spring from a height of 15.0 m. If the spring constant is k = 100000.0 N/m, how far does the spring compress to bring the tank to rest? a. 21.6 m b. 8.9 m c. 13.4 m d. 19.3 m

Explanation / Answer

here,

20)

mass , m = 300 kg

accelration , a = 5.5 m/s^2

let the tension in the cable be T

T - m * g = m * a

T = 300 * ( 9.81 + 5.5) N

T = 4590 N

the tenion in the cable is b) 4590 N

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