Mechanics | Relativity Answers

The earth (mass =6 into 10 raise to power 24 kg)revoives around the sun with an angular velocity of 2 into 10 raise to power minus 7 rad/s in circular orbit of radius 1.5 into 10 raise to power 8 km .the fore exertedby the sun on earth in newtons is............................................?????????????????????//

A damped vibrating system starting from rest has a initial amplitude of 20cm which reduces to 2 cm after 100 complete oscillation each of period 2.303 scond .Find the logarithmic decrement of system?

A uniform spring of force k is connected into two pieces of length in ratio 1:2 .What is the force constant of each piece in terms of k?

a aluminium rod has a breaking strain 0.2 % the minimum cross sectional area of rod in m square in order to support a load of 10 power 4 Newtons is ?youngs modulus is 7 * 10 power 9

A mass ‘m’ moves with a velocity v and collides
inelastically with another identical mass. After
collision the 1st mass moves with velocity v/√3 in a
direction perpendicular to the initial direction of
motion. Find the speed of the 2nd mass after
collision.

if a block up an inclined plane 30 degree with a velocity of 5 m/s ,stops after 0.5 s then ; coffecient of friction will be ????????????????????????????????????

a string tied on roof can bear maxmium tension of 50 kg wt .the minimum acceleration that can be acquired by man of 98 kg to descend will be g=9.8 m/s square

a ball of mass 50 g dropped from height of 20 m . a boy on the ground hits the ball vertically upwards with a bat with an average force of 200N so that it attains a vertical height of 45 m .the time for which the ball remains in contact with the bat g=10 m/s square

A grenade having mass of 10kg flying horizontally with velocity of 10 m/s into two fragment .The larger fragment has velocity of 25 m/s in the direction of the grenade .the smaller fragment has velocity of 12.5 m/s in the opposite direction.the masses of the fragments are ??????????????????????????????????????????????????????????

a 10 kg object is subjected to two forces F,one vector = 16 icap - 11j cap and F,two vector = 8i cap + 18 j cap ,the magnitude of resultant acceleration in ms / square will be ?????????????????????????