Answer:
tension far end 883.055714 N
tension closer 578.634286 N
Explanation:
Given data
scaffold mass m1 = 64 kg
scaffold length L1 = 6.3 m
window washer mass m2 = 85 kg
distance L2 = 2 m
to find out
tension near cable and farther cable
solution
torques at the end farthest
(m1 × g × L1 ) / 2 + (m2 × g × L1- L2 ) = T × L1
T × 6.3 = (64 × 9.81 × 6.3 ) / 2 + (85 × 9.81 × 4.3 )
T = 5563.251 / 6.3
tension = 883.055714 N
and
torques at the other end,
(m1 × g × L1 ) / 2 + (m2 × g × L2 ) = T × L1
T × 6.3 = (64 × 9.81 × 6.3 ) / 2 + (85 × 9.81 × 2 )
T = 3645.396 / 6.3
tension = 578.634286 N
Answer:
<h2>6000 J</h2>
Explanation:
The work done by an object can be found by using the formula
workdone = force × distance
From the question we have
workdone = 300 × 20
We have the final answer as
<h3>6000 J</h3>
Hope this helps you
Answer:
C momentum change
Explanation:
An impulse results in a change of momentum.
An impulse is a force action over a period of time.
Natural Selection is that the species that are best suited or adapted to their environment or most likely to survive and reproduce
And after a few generations evolution occurs
(2π rad/year) x (1 yr/365 days) x (1 day / 86,400 seconds)
= (2π) / (365 x 86,400) rad/sec
= 0.000 000 2 radian/sec
= 0.2 microrad/sec