To find the tangential velocity of the cart, we can use the formula for centripetal force:
F = (m * v^2) / r
Where:
F = centripetal force
m = mass
v = tangential velocity
r = radius of the circular path
We can rearrange the formula to solve for the tangential velocity:
v = sqrt((F * r) / m)
Plugging in the values:
F = 42N
r = 2.0m
m = 8.4kg
v = sqrt((42 * 2) / 8.4)
v = sqrt(84 / 8.4)
v = sqrt(10)
v ≈ 3.16 m/s
So, the tangential velocity of the cart is approximately 3.16 m/s.