Search & Filtering
A 20-kg child on a swing can make a maximum angle of 400 with respect to the vertical. What is the child’s maximum speed if the chains of the swing have a length of 4 m?
A baseball is hit with a speed of 29.0 m/s
m/s at an angle of 43.0
∘ . It lands on the flat roof of a 14.0 m
m -tall nearby building.
Part A
If the ball was hit when it was 1.0 m
m above the ground, what horizontal distance does it travel before it lands on the building?
The force F = 900 lb acts on the rope. Resolve this force into components acting along members of the beam and cable, and determine the magnitude of each component (theta=23 degrees)
a resultant force of 4.5 N directed 30 north east is acting on a particle. what force is needed to bring the particle into a state of equilibrium
A 2.5 kg block is on a 53 degree inclined plane for which μk = 0.25 and μs = 0.5. Find its acceleration and its orientation knowing that :
a) it is initially at rest.
b) it moves up the slope.
c) it moves down the slope.
A person weighing 80 kg applies a horizontal force to a box weighing 20 kg to set it in motion. The person is μs = 0.8 and the box is μk =0.4.
a) Assuming the person remains stationary, what is the maximum possible acceleration of the box?
b) Use the answer to the previous question to determine the force exerted by the case on the person.
Auston Mattlew, when not playing hockey, i9s also a sharpshooter and aforensic expert. On days when he doent play hockey, he practices his shooting skills by firing a bullet. auston matthew notices the pendulum moved to 10 cm above the original position ( please see the picture for more details )
The spring oscillates to the other end. The amplitude is 3.5m, k = 1.2, and angular frequency is = 4.3 . Solve the frequency, wavelength, wave speed, period, wave number, and direction.
If the sound intensity 4.0 m from a point sound source is 1.0 × 10–⁶ Wm², what will be the sound intensity at each of the following distances from the source:
A. 1.0 m?
B. 2.0 m?
How will you measure the height of a building if you do not have the necessary tools? Using the concept of free fall, illustrate, label, and explain how you are going to do it
