A man weighing 700 N is in an elevator that is accelerating upward at 4 m/s².The force exerted on him by the elevator floor is: A)71 N B)290 N C)410 N D)700 N E)990 N

Question

Quizplus · Accepted Answer

The force exerted on the man by the elevator floor can be calculated using the formula F = ma + mg, where m is the mass, a is the acceleration, and g is the acceleration due to gravity (9.8 m/s^2). First, find the mass (m = weight/g = 700N/9.8m/s^2 = 71.43kg). Then, F = 71.43kg * (4m/s^2 + 9.8m/s^2) = 71.43kg * 13.8m/s^2 = 985.94N, which rounds to 990N.

A Man Weighing 700 N Is in an Elevator That