Question

A block is hanging vertically by a rope attached to the ceiling of an elevator. The tension in the rope is less than the weight of the block. The net external force vector on the block points:

a. Upward
b. Downward
c. Nowhere as this vector is zero

Question 4. In the previous question the acceleration vector of the block points:

a. Upward
b. Downward

Answer 1

Let the weight of the block is 10N and it is acting downward

Answer 2

Now let the tension on block by rope is 8N and it is acting upward

Answer 3

10-8=2N
Right?

Answer 4

Can u tell me the direction of this 2N net force???

Answer 5

downwards?

Answer 6

Ya u r correct!!!!!

Answer 7

So net force on block is downward

Answer 8

Can u tell me the direction of acceleration of the block

Answer 9

Response plz!!!

Answer 10

Sorry! My computer froze! I am not sure about this one, because it is not accelerating

Answer 11

No it is accelerating

Answer 12

U know
F=ma

Answer 13

F=force
m=mass
a=acceleration

Answer 14

U know both F and a are vectors

Answer 15

U know frm my equation
If F=0 then a=0

Answer 16

If F is not zero then a can not b zero

Answer 17

Now net force F=2N then acceleration can not b zero

Answer 18

U know frm my equation
Both F and a have same direction. Right?

Answer 19

Can u tell me the direction of a?????

Answer 20

ok so the same

Answer 21

if F is downwards then a must be too!

Answer 22

Glad to help u!!!!

Answer 23

thanks :)

Answer 24

Welcome!!!!