A chair of weight 100 N lies atop a horizontal floor; the floor is not frictionless. You push on the chair with a force of F = 43.0 N directed at an angle of 35.0 degrees below the horizontal and the chair slides along the floor. Using Newton's laws, calculate n, the magnitude of the normal force that the floor exerts on the chair. Express your answer in newtons.
The normal force will be "122.8 N".
The given values are:
W = 100 N
F = 40 N
θ = 35.0°
As we know,
On substituting the given values, we get
To calculate the magnitude of the normal force, analyze the forces acting on the chair and find the sum of the vertical component of the applied force and the weight of the chair. The normal force is equal to the sum of the vertical component of the applied force and the weight of the chair.
To calculate the magnitude of the normal force that the floor exerts on the chair, we need to analyze the forces acting on the chair. The weight of the chair is acting vertically downwards with a magnitude of 100 N. The force you apply to the chair is acting at an angle of 35.0 degrees below the horizontal. Since the chair is sliding, there must be a friction force opposing its motion. Using Newton's laws, we can find the normal force.
Resolve the applied force into horizontal and vertical components. The horizontal component is given by F_cos(35°) and the vertical component is given by F_sin(35°).
The horizontal component of the applied force is balanced by the friction force. Therefore, the friction force is equal to the horizontal component of the applied force.
The vertical component of the applied force and the weight of the chair contribute to the normal force. So, the normal force is equal to the sum of the vertical component of the applied force and the weight of the chair.
Therefore, n = F_sin(35°) + weight = 43.0 N * sin(35°) + 100 N.
If you want to play a tune on wine glasses, you’ll need to adjust the oscillation frequencies by adding water to the glasses. This changes the mass that oscillates (more water means more mass) but not the restoring force, which is determined by the stiffness of the glass itself. If you need to raise the frequency of a par- ticular glass, should you add water or remove water?
Answer:Reducing mass i.e. water
Frequency For given mass in glass is given by
where k =stiffness of the glass
m=mass of water in glass
from the above expression we can see that if mass is inversely Proportional to frequency
thus reducing mass we can increase frequency
Information that is easily converted into numbers and is stored as a on and off signals is _____ information.
The switch in the circuit has been in the left position for a long time. At t=0 it moves to the right position and stays there.a. Write the expression for the capacitor voltage v(t), fort≥0. b. Write the expression for the current through the 2.4kΩ resistor, i(t), fort≥0+.
Pls refer to attached file
A 50 kg child on a skateboard experiences a 75-N force as shown.What is the expected acceleration of the child?
F = 75 N 7 .
A. 0.67 m/s2 B. 1.50 m/s2 C. 6.70 m/s2 D. 25.0 m/s2
The acceleration of an object given it's mass and the force acting on it can be found by using the formula
f is the force
m is the mass
From the question we have
We have the final answer as
Hope this helps you
Which of the following is not a risk associated with using legal drugs without medical supervision
paying too much on the black market instead of getting a prescription
i just took the quiz
Paying too much on the black market instead of getting a prescription
The rest of the options are risks associated with using legal drugs without medical supervision.