2.25 joules work is done in stretching the spring from its natural length to 90 cm beyond its natural length.
The spring's length without any connected mass is its natural length. Assuming the spring abides with Hooke's law The spring produces a force Fs=kL if its length is altered by an amount L from its normal length, where k is a positive quantity known as the spring constant.
distance moved = 90 cm = 0 .50 m
F = 500 N =5.00 KN
Work Done = FS = 5.00 KN * 0 .50 m
= 2.5K Joules
in stretching the spring from its natural length to 90 cm beyond its natural length is
2.5 * 0.90
2.25 joules
2.25 joules work is done in stretching the spring from its natural length to 90 cm beyond its natural length
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