A block of mass 2 kg slides down an inclined plane which makes an angle 30 degree with horizontal mu= - Physics - Laws Of Motion

Question

A block of mass 2 kg slides down an inclined plane which makes an
angle 30 degree with horizontal mu=?3/2
What force should be applied to the block so that block moves
1) down the plane without acceleration
2) up the plane without acceleration

Ravi Gupta · Accepted Answer

Dear Student
Kindly find the answer of your asked query

m = 2 kgθ=30 degreeμ is always less than 1 hence it should be 0
5
for downward motion:F = mgsinθ-frF = mgsinθ-μRF=mgsinθ-μmgcosθF=mgsinθ-μcosθF=2×10(sin30-32cos30)F=2012-0
5×32=1
34 Nfor upward motion:F = mgsinθ+frF = mgsin+μRF=mgsinθ+μmgcosθF=mgsinθ+μcosθF=2×10(sin30+32cos30)F=2012+0
5×32=18 66 N

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A block of mass 2 kg slides down an inclined plane which makes an angle 30 degree with horizontal mu=?3/2 What force should be applied to the block so that block moves 1) down the plane without acceleration 2) up the plane without acceleration

A block of mass 2 kg slides down an inclined plane which makes an angle 30 degree with horizontal mu=?3/2
What force should be applied to the block so that block moves
1) down the plane without acceleration
2) up the plane without acceleration