Acannon is rigidly attached to a carriage, which can move along horizontal rails but is connected to a post by a large spring, initially unstretched, of force constant 2 n/m. the cannon fires a 237 kg projectile at a velocity of 170 m/s directed 31.3 â—¦ above the horizontal. 31.3 â—¦ if the mass of the cannon and its carriage is 6475.91 kg, find the recoil velocity of the cannon.

Explanation:

Given

mass of cannon and cart is

Spring constant

mass of Projectile

Launch Velocity of cannon

Launch angle

As the External Force is zero therefore we can conserve momentum

Initially both Projectile and cannon is at rest

Conserving momentum in horizontal direction

i.e. cannon is moving in opposite direction of Projectile

d. platinum would have the greatest temperature increase because it has the lowest specific heat.