1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
elena-14-01-66 [18.8K]
2 years ago
8

A 2000 kg car moving at 100 km/h crosses the top of a hill with a radius of curvature of 100 m. What is the normal force exerted

by the seat on the driver if the mass of the driver is 60 kg?
Physics
1 answer:
Tpy6a [65]2 years ago
6 0

Answer:

The normal force the seat exerted on the driver is 125 N.

Explanation:

Given;

mass of the car, m = 2000 kg

speed of the car, u = 100 km/h = 27.78 m/s

radius of curvature of the hill, r = 100 m

mass of the driver, = 60 kg

The centripetal force of the driver at top of the hill is given as;

F_c = F_g - F_N

where;

Fc is the centripetal force

F_g is downward force due to weight of the driver

F_N is upward or normal force on the drive

F_N = F_g-F_c\\\\F_N = mg - \frac{mv^2}{r} \\\\F_N = (60 \times 9.8) -\frac{60 \ \times \ 27.78^2 \ }{100} \\\\F_N = 588 \ N - 463 \ N\\\\F_N = 125 \ N

Therefore, the normal force the seat exerted on the driver is 125 N.

You might be interested in
When a potential difference of 12 V is applied to a wire 6.7 m long and 0.31 mm in diameter the result is an electric current of
anastassius [24]
The wire needs to be sauderwired to be connected back into place to get energy into column so it came function properly again!
7 0
3 years ago
How much soil is in a 5 cm to 9 cm deep hole?
vlabodo [156]
There is no soil in a hole

;)
6 0
3 years ago
A ball is thrown straight upward. When it has reached the highest point in its motion, and is momentarily stopped, its accelerat
Damm [24]
Increased .....................
7 0
3 years ago
A toy train engine rests motionless on a track. One student begins pushing the engine to the right with a force of 2 newtons. At
Svetradugi [14.3K]
I think it’s B

Hope it helps
8 0
3 years ago
What is the magnitude of the angular momentum (in kgm2/s) of a 40 g golf ball flying through the air and spinning at 4300 rpm af
sladkih [1.3K]

Answer:

L=0.0045\ kg-m^2/s

Explanation:

Given that,

The mass of a golf ball, m = 40 g = 0.04 kg

Its angular velocity, \omega=4300\ rpm=450.29\ rad/s

The radius of the sphere is 2.5 cm or 0.025 m

We need to find the magnitude of the angular momentum of the ball. It is given by the formula as follows:

L=I\omega

Where I is moment of inertia

For sphere, I=\dfrac{2}{5}mr^2

L=\dfrac{2}{5}mr^2\omega\\\\L=\dfrac{2}{5}\times 0.04\times (0.025)^2\times 450.29\\\\L=0.0045\ kg-m^2/s

So, the magnitude of the angular momentum of the sphere is 0.0045\ kg-m^2/s.

4 0
2 years ago
Other questions:
  • What is the first step in glycolysis
    8·1 answer
  • What is the weight of a 10 kg object on earth
    6·2 answers
  • A city’s bus line is used more as the urban population density increases. The more people in an area, the more likely bus lines
    15·2 answers
  • A light platform is suspended from the ceiling by a spring. A student with a mass of 90 kg climbs onto the platform. When it sto
    11·1 answer
  • Is the classification for an instrument that produces sound whne a string or strings stretched between two points is plucked?
    13·1 answer
  • Most problems addressed by the technological design process have only one solution true/false
    9·2 answers
  • What are (a) the lowest frequency, (b) the second lowest frequency, and (c) the third lowest frequency for standing waves on a w
    9·1 answer
  • Newton's third law states that for every action force there is an equal and opposite reaction force. An idiot in your class says
    14·2 answers
  • Which wave shows the loudest sound below?​
    11·2 answers
  • Plz, help the rubber ball be dropped from the top of a ladder. It bounces on the same spot on the ground several times to a less
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!