A 10-kg block on a horizontal frictionless surface is attached to a light spring (force constant = 1.2 kN/m).The block is initially at rest at its equilibrium position when a force (magnitude P)acting parallel to the surface is applied to the block,as shown.When the block is 8.0 cm from the equilibrium position,it has a speed of 0.80 m/s.How much work is done on the block by the force P as the block moves the 8.0 cm?
A)8.3 J
B)6.4 J
C)7.0 J
D)7.7 J
E)3.9 J

Question

A 10-kg block on a horizontal frictionless surface is attached to a light spring (force constant = 1.2 kN/m).The block is initially at rest at its equilibrium position when a force (magnitude P)acting parallel to the surface is applied to the block,as shown.When the block is 8.0 cm from the equilibrium position,it has a speed of 0.80 m/s.How much work is done on the block by the force P as the block moves the 8.0 cm? 
A)8.3 J 
B)6.4 J 
C)7.0 J 
D)7.7 J 
E)3.9 J

Quizplus · Accepted Answer

The Answer of A 10-kg block on a horizontal frictionless surface is attached to a light spring (force constant = 1.2 kN/m).The block is initially at rest at its equilibrium position when a force (magnitude P)acting parallel to the surface is applied to the block,as shown.When the block is 8.0 cm from the equilibrium position,it has a speed of 0.80 m/s.How much work is done on the block by the force P as the block moves the 8.0 cm? 
A)8.3 J 
B)6.4 J 
C)7.0 J 
D)7.7 J 
E)3.9 J

A 10-Kg Block on a Horizontal Frictionless Surface Is Attached