Answer:
T=3.29 N
Explanation:
let V be the speed at low point
From conservation of energy
0.5mV²=m*g*l*(1-cos(∅))
(mV²/l)=2m*g*(1-cos(∅))
Nowat low point
T-mg=mV²/l
T=mg+2mg((1-cos(∅))
T=mg(3-2cos(∅))
T=0.25*.81*(3-2cos(34))
T=3.29 N
Answer:
Explanation:
Tension in the rope in upward direction = 30.2 N .
weight of bucket in downward direction = mg
net force in upward direction = 30.2 - mg
30.2 - 2.89 x 9.8
= 1.878 N
acceleration = net force / mass
= 1.878 / 2.89
= .65 m /s² .
= 65 cm /s²
Answer: acceleration is time derivative of speed.
When v(t) = 60 + 0.50t, is a(t) = v' (t) = 0.50 (m/s²)
D. because Land does reach higher temperatures then water and Land heats more rapidly