Question

A block of mass 2 kg is placed in an elevator going upward with an acceleration 2m/s2.
The normal reaction by the elevator will be​

Answer 1

Answer:

The normal force is equal to your apparent weight. So, you actually feel a little heavier than usual when the elevator accelerates upward, and lighter than usual when the acceleration is down.

Explanation:

From force diagram shown in figure

N−mg=ma

0

120−mg=m(2)

m=

10+2

120

=10kg

Answer 2

Answer:

A block of mass

2kg

is placed on the floor of an elevator. The elevator is moving with an acceleration of

6i cap+7j cap m/(s)^2

. If

0.5 , g=10 ms

<br> and horizontal, vertically upward direactions are taken as

+vex,y

axes, find frictional force actiong on the block.