While a block slides forward 1.35 m, a force pulls back at a 135 direction, doing -17.8 j of work. what is the magnitude of the force? (unit=n)

Explanation:

       The Work done by any force is defined as the force applied times the displacement of point of application of force in the direction of force.

       This is better represented as a scalar product of Force vector and displacement vector.

Here, the angle between force and displacement is .

∴ Magnitude of force =

the answer to this is proletariats.

hope this : )

initial speed when it is dropped is 150 ft/s

now at the same moment the acceleration due to gravity is perpendicular to its velocity

so as we know that

now we have centripetal acceleration a = 32 ft/s^2 as its perpendicular to velocity

while tangential acceleration at the same moment will be zero

so

now radius of curvature is given as

so the radius of curvature just after it is dropped is 703.125 ft