A 3 m tall ladder tips over from a vertical starting point. It's lower end does not slip.
A 3 m tall ladder tips over from a vertical starting point. It's lower end does not slip. What will be the speed of the upper end of the ladder just before it hits the ground? Use your judgement for the best shape of the ladder.
A uniform ladder 5.30 m long rests against a
frictionless, vertical wall with its lower end 3.10 m
from the wall. The ladder weighs 161 N . The coefficient
of static friction between the foot of the ladder and the ground is
0.390. A painter weighing 741 N climbs slowly up the
ladder.
a)What is the actual size of the frictional force when the
painter has climbed 1.0197 m along the ladder?
b)How far along the ladder can the painter climb before the
ladder starts...
A uniform ladder 5.30 m long rests against a
frictionless, vertical wall with its lower end 3.10 m
from the wall. The ladder weighs 157 N . The coefficient
of static friction between the foot of the ladder and the ground is
0.430. A painter weighing 739 N climbs slowly up the
ladder.
How far along the ladder can the painter climb before the ladder
starts to slip?
The
rock from a 3 m radius vertical shaft 412,98 m deep is to be dumped
on level ground.
The base diameter of the dump is limited to 60 m; the angle of
repose of rock = 37°. The ratio of broken to in situ rock =
3:5.
The dump is to be levelled on the top when the shaft is
completed.
Calculate:
a) The volume of rock to be dumped.
b) The vertical height of the completed dump.
c)...
A diving board of length 3.00 m is supported at a point 1.00 m from the end, and a diver weighing 480 N stands at the free end (Figure 1) The diving board is of uniform cross section and weighs 300 N. Find the magnitude of the force at the support point. Find the direction of the force at the support point. Find the magnitude of the force at the left-hand end. Find the direction of the force at the left-hand...
As shown in the Figure below, a light string that does not stretch changes from horizontal to vertical as it passes over the edge of a table. The string connects m_1, a 3.30 kg block, originally at rest on the horizontal table at a height 1.29 m above the floor, to m_2, a hanging 2 kg block originally a distance d = 0.980 m above the floor. Neither the surface of the table nor its edge exerts a force of...
You borrow $7,000 today and promise to repay the loan over the next three years with 36 equal, end-of-month payments starting one month from today. The interest rate is 4% APR compounded monthly. What is the amount of each payment? Round only your final answer to two decimal places.• $206.67• $194.44• $214.98• $202.19• $223.86