Answer: 210.2N
Explanation:
Assume a bucket of water with a total mass of 68kg is attached to a rope, which in turn is tied around a 0.078m radius cylinder at the top of a well. A crank with a turning radius of 0.250 m is attached to the end of the cylinder.
the minimum force directed perpendicular to the crank handle required to raise the bucket is
(Assume the rope's mass is negligible, that the cylinder turns on friction-less bearings, and that g = 9.8 m/s2
The crank handle provides a torque T=0.25F where F is the force we are looking for.
A free body diagram will show that the tension in the rope times the cylinder radius R is equal to the torque on the cylinder. But the tension in the rope is just the weight of the bucket
W=mg= 68kg
W(0.078)=T=0.25F
F=0.312W=0.312(68kg)=21.216kg= 210.2N
Answer:
The speed of the ball just before it strikes the ground is 15.90 m/s.
Explanation:
Given that,
Height = 109 m
Distance = 75 m
We need to calculate the time
Using formula for horizontal projectile
Where, h = height
Put the value into the formula
We need to calculate the speed of the ball just before it strikes the ground
Using formula of speed
Where, v = speed
d = distance
t = time
Put the value into the formula
Hence, The speed of the ball just before it strikes the ground is 15.90 m/s.
Answer:
There are three species of land iguana found in the Galapagos Islands. The well-known yellowish land iguanas include Conolophus subcristatus, native to six islands, and Conolophus pallidus, found only on the island of Santa Fe.
Don't worry eventually it is going to stop somewhere or land right
