science

posted by .

If a 150 pound man walks onto an elevator. Suddenly it rises rapidly from the 1st to 14th floor. if the man steps onto a scale in the elevator during the rapid rise, he would weigh...

A) 150 pounds
B) More than 150 pounds
C) Less than 150 pounds

• science -

Ftotal on man = m a
Force F up on man from scale, mg down on man
F - mg = ma
so
F = m g + m a
if a is + up then F bigger from scale

Similar Questions

1. Science

If a 150 pound man walks onto an elevator. Suddenly it rises rapidly from the 1st to 14th floor. if the man steps onto a scale in the elevator during the rapid rise, he would weigh... A) 150 pounds B) More than 150 pounds C) Less than …
2. science

If a 150 pound man walks onto an elevator. Suddenly it rises rapidly from the 1st to 14th floor. if the man steps onto a scale in the elevator during the rapid rise, he would weigh... A) 150 pounds B) More than 150 pounds C) Less than …
3. Physics

A man in an elevator is 79kg. The elevator itself is 860kg. As the elevator begins to move down, a scale the man is standing on reads 437N. How do I determine the acceleration of the elevator?
4. physics

A 69-kg man standing on a scale in an elevator notes that as the elevator rises, the scale reads 823 N. What is the acceleration of the elevator?
5. Physics

A 42 kg man stands on a bathroom scale in an elevator. Starting from rest at the bottom floor, the elevator ascends, attaining its maximum speed of 1.95 m/s in 1.22 s. It travels with this constant speed for the next 7.80 s. The elevator …
6. Physics

An 80 kg man stands in an elevator. What force does the floor of the elevator exert on the man if a) the elevator is stationary?
7. physics

A 61-kg man standing on a scale in an elevator notes that as the elevator rises, the scale reads 815 N. What is the acceleration of the elevator?
8. physics

A 61-kg man standing on a scale in an elevator notes that as the elevator rises, the scale reads 815 N. What is the acceleration of the elevator?
9. Physics

An 80 kg man stands in an elevator. What force does the floor of the elevator exert on the man if a) the elevator is stationary?
10. Physics

An 80 kg man stands in an elevator. What force does the floor of the elevator exert on the man if a) the elevator is stationary?

More Similar Questions