How far will a block get in 1 second if it has a mass of 10 kg and is being pushed with a force of 1,703 Newtons while the kinetic coefficient of friction is 1.1?
Answers
Answer:
the answer is : 10N.,,, 5KG.
Explanation how it works:
Inertial Mass
When you compare the two laws of motion, you discover that the
first law identifies inertia as the property of matter that resists
a change in its motion; that is, it resists acceleration. The second
law gives a quantitative method of finding acceleration, but it does
not seem to mention inertia. Instead, the second law indicates
that the property that relates force and acceleration is mass.
Actually, the mass (m) used in the second law is correctly
described as the inertial mass of the object, the property that
resists a change in motion. As you know, matter has another property — it experiences a gravitational attractive force. Physicists
refer to this property of matter as its gravitational mass. Physicists
never assume that two seemingly different properties are related
without thoroughly studying them. In the next investigation, you
will examine the relationship between inertial mass and gravitational mass.
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Which change is the best example of a physical change?1) a cookie baking 2) paper burning 3) ice cream melting 4) a nail rusting
cords unwind the rod rotates. Find the tension in the cords as they unwind.
Answers
Answer:
T = mg/6
Explanation:
Draw a free body diagram (see attached). There are two tension forces acting upward at the edge of the cylinder, and weight at the center acting downwards.
The center rotates about the point where the cords touch the edge. Sum the torques about that point:
∑τ = Iα
mgr = (1/2 mr² + mr²) α
mgr = 3/2 mr² α
g = 3/2 r α
α = 2g / (3r)
(Notice that you have to use parallel axis theorem to find the moment of inertia of the cylinder about the point on its edge rather than its center.)
Now, sum of the forces in the y direction:
∑F = ma
2T − mg = m (-a)
2T − mg = -ma
Since a = αr:
2T − mg = -mαr
Substituting expression for α:
2T − mg = -m (2g / (3r)) r
2T − mg = -2/3 mg
2T = 1/3 mg
T = 1/6 mg
The tension in each cord is mg/6.
Answers
Answer:
The rate at which work is done is called Power.
Explanation:
Power is work done per unit time. or it can also be defined as ratio of work done to time taken to complete the work.
Mathematically the power (P) is given as:
1 watt = 1 Joule/second
Where:
W = Work done in time T.
T = Time taken to complete the work
The rate at which work is done is called Power.
Answers
Answer:
Heat flows from high temperature to low temperature
Explanation:
the answer also may vary it can also be the heat flows from a warmer to colder place
hope this helped!
Answer:
Heat is always the transfer of energy from an object at a higher temperature to an object at a lower temperature.
Explanation:
Answers
-32.7° below the horizontal.
What is the normal force on the cart?
Answers
Answer:
The "normal force" on the "cart" 63.893 N.
Explanation:
To find normal force on the cart, use the equation
Normal force = mg + F sinx,
“m” being the object's mass,
“g” being the acceleration of gravity,
“x” being the angle of the cart
Given values
M = 7.33 kg
F = 14.7 N
Substitute the values in above equation
Normal force = (7.33 × 9.8) + 14.7 sin(-32.7°)
Normal force = 71.834 + 14.7 × (-0.5402)
Normal force = 71.834 - 7.94094
Normal force = 63.893 N
The "normal force" on "the cart" 63.893 N.
The normal force on the cart is 79.7 N
Explanation:
In order to find the normal force, we have to analyze the forces acting on the cart on the vertical direction.
In the vertical direction, we have the following forces:
The weight of the cart, downward, of magnitude , where m is the mass of the cart and g is the acceleration of gravity
The normal force on the cart, upward, we indicate it with N
The component of the pushing force acting in the vertical direction, downward, of magnitude , where F is the magnitude of the force and is the angle of the force with the horizontal
Therefore, the equation of the forces on the cart in the vertical direction is:
where the net force is zero since the cart is balanced in the vertical direction. We have:
We take the angle as positive since we are already considering the downward direction in the equation.
Substituting and solving for N, we find the normal force:
Learn more about forces:
A. 7.0 newtons
B. 70 newtons
C. 700 newtons
d. 7000 newtons
Answers
Weight = (mass) x (gravity)
Weight = (7.0 kg) x (gravity)
On Earth, where (gravity) is roughly 10 N/kg . . .
Weight = (7.0 kg) x (roughly 10 N/kg)
Weight = roughly 70 Newtons
That's B on Earth.
It would be some other number on other bodies.