Explanation:
<u>Given</u><u>.</u> <u>Required</u><u> </u>
wo = 400N. MA=?
wi = 50N
<u>Solution</u>
MA = <u> </u><u>wo</u> = <u>400N</u> =8
wi. 50N
Answer:1.375metre per second square
Explanation: acceleration=(final velocity-initial velocity)÷time
acceleration=(8.6-4.2)÷3.2
Acceleration=4.4÷3.2
Acceleration=1.375 metre per second square
Answer:
Explanation:
Work done by the spring is negative .
Work done by force F creating displacement d is given by the following expression .
Work = F x d
Both force and displacement are vector quantity .
When direction of force and direction of displacement is same , work is positive . When direction of force and direction of displacement is opposite , work is negative .
When spring is compressed , it exerts a restoring or opposing force in a direction opposite to the direction of displacement of box . Hence here force is opposite to displacement . Restoring force acts opposite to displacement . Hence work done by spring on box is negative .
