###### Please wait...
Contact Us
Contact
Need assistance? Contact us on below numbers

For Study plan details

10:00 AM to 7:00 PM IST all days.

For Franchisee Enquiry

OR

or

Thanks, You will receive a call shortly.
Customer Support

You are very important to us

For any content/service related issues please contact on this number

93219 24448 / 99871 78554

Mon to Sat - 10 AM to 7 PM

# Block A weight 4N and B weight 8N . The coefficient of kinetic friction is 0.25 for all surface. Find the force F to slide B weight a constant.speed when A.rests on B and moves with it find the force F to slide B a constant speed when A is held rest and find the force F to.solid.B at a constant speed when A and B are connected by a light cord passing over a.smooth pulley?

Asked by kanakpandeyyy 19th August 2018, 12:26 PM
Answered by Expert
Answer:
Figure shows the various forces acting on block-B, when block-A is resting on it.
Applied force F will just balance the frictional force f, in order to pull the block with constant speed.

frictional force f = μR = 0.25×12 = 3 N

hence applied force of magnitude 3N will be able to pull the block-B with constant velocity,
when block-A resting on block-B and moving with block-B
---------------------------
No force is required when block-A and block-B are connected by a light cord and passed over pulley,
because block-B is heavier than block-A.
Answered by Expert 24th August 2018, 3:47 PM
Rate this answer
• 1
• 2
• 3
• 4
• 5
• 6
• 7
• 8
• 9
• 10

You have rated this answer /10

Your answer has been posted successfully!
RELATED STUDY RESOURCES :
NEET QUESTION ANSWERS

### Latest Questions

CBSE X Biology
Asked by Sureshgowdayd548 28th October 2020, 10:50 PM
CBSE X Biology
Asked by reenacharan2008 28th October 2020, 9:11 PM