An elevator weighing 3.5×10+10 N is raised to a height of 1000 m in the absence of friction, the work done is?
A. 3.5×103 J
B. 3.5×104 J
C. 3.5×106 J
D. 3.5×109 J
Answer:D
An elevator weighing 3.5×10+10 N is raised to a height of 1000 m in the absence of friction, the work done is?
A. 3.5×103 J B. 3.5×104 J C. 3.5×106 J D. 3.5×109 J