0
A 3.70 kg block starts from rest at the top of a 30.0 degree incline and slides 2 m down the incline in 1.50 s Find the acceleration of the block?
Wiki User
∙ 11y ago
- A 2 kg block slides down a rough incline with a constant velocity. The angle
of incline is θ=30⁰. Coefficient of friction of the incline is, μk=0.5. A
horizontal force, F, is acting on the block as shown in the figure. (Assume
g=10 m/s and do not forget that the direction is downward!!) (Note: You
don’t have to use unit vectors. Mentioning the sign convention correctly for
all forces is enough for the answer.)
a) Determine the magnitude of the force F.
b) Determine the normal force exerted by the incline surface to the block
kevin1723
Kathlyn Feil
Wiki User
∙ 11y agos=s^i+v^i*t+ 1/2 at^2
As block is starting from rest so its s^i and v^i will be zero,,
now eqn comes to s=1/2 at^2
..
by putting the values u can easiily find the answer.!
Wiki User
∙ 12y agodisplacement = (avg velocity /2) * t
2m = (avg velocity /2) * 1.5 sec
avg velocity = 2.67m/s
v/t= a
2.67/1.5s = 1.78m/s2
Add your answer:
Earn +20 pts
How is speed and acceleration represented on a graph?
On a speed versus time graph, acceleration is represented by the line on the graph. If acceleration is constant, the line cuts through equally between the axis and starts from the zero point.
What is the acceleration of a body which starts from rest and travels 87.5 m in 5 seconds?
distance = 1/2 acceleration x time squared; acceleration is 7 m/s/s
A body starts slipping down an incline and moves a half meter in a half second. How long will it take to move the next half meter?
It will take a half second.
Is it possible for an object with constant negative acceleration to change the direction in which it is moving?
Sure. Anything you toss with your hand has constant acceleration after you toss it ... the acceleration of gravity, directed downward. If you toss it upward, it starts out with upward velocity, which reverses and eventually becomes downward velocity.
What is a real life example of acceleration?
You have acceleration any time a velocity changes - like when an object falls down due to gravity, when a car starts or stops, when you start moving or stop moving, etc.
A 1.9 kg otter starts from rest at the top of a muddy incline 82.5 cm long and slides down to the bottom in 0.40 s What net external force acts on the otter along the incline Answer in units of N?
mass = 1.9 kg distance (s) = 0.825 metres time (t) = 0.4 seconds initial velocity (u) = 0 metres/sec to find acceleration (a) shuffle s = ( u * t ) + ( 0.5 * a * t^2 ) to isolate a a = s - ( u * t ) / ( 0.5 * t^2 ) a = ( 0.825-0 ) / ( 0.5 * 0.16 ) a = 0.825 / 0.08 a = 10.3125 ( m / s ) / s force required to give 1.9 kg mass an acceleration of 10.3125 ( m / s ) / s f = m * a f = 1.9 * 10.3125 f = 19.59 newtons
A 3 kg block slides down a 30 degree inclined plane with constant acceleration of 0.5 ms2 The block starts from rest at the top The length of the incline is 2 m What is the final velocity?
This is a tough question. There's so much information given that it's difficult to dig past the useless stuff and find our way to the info we actually need. Turns out we don't need the mass of the block or the angle of the incline. We can do just fine with the acceleration and distance. Average velocity = 1/2 (Vinitial + Vfinal) = 1/2 Vfinal Distance = (average velocity) times (time) time = Distance / (average velocity) = 2 x distance / Vfinal = 4 / Vfinal Distance = 1/2 a t2 = 1/2 (0.5) (4/Vfinal)2 2 = 1/4 x 16 x (1/V2final) ===> 2 V2final = 4 ===> V2final = 2 Vfinal = sqrt(2) meters/sec
What is Something found at school that starts with an s?
Substitute teachers, or for elementary schools Slides
Suppose Sharon rides her bike at a speed of 10 ms as she rides up a hill her speed decreases to 5 ms is her acceleration positive or negative?
I would say positive, as she starts the incline of the hill, she has to pedel harder and harder, whilst doing this she would be slowing down, so yeah, positive
What simple machine starts with the letter i?
The incline plane is the simple machine that starts with an I. The other five are wheel and axle, wedge, lever, screw and pulley.
Simple machine that starts with I?
Inclined plane. One of the six; screw, wedge, incline plane, pulley, wheel and axle, and lever.
What degree starts to freeze?
32
How is speed and acceleration represented on a graph?
On a speed versus time graph, acceleration is represented by the line on the graph. If acceleration is constant, the line cuts through equally between the axis and starts from the zero point.
When do degree supply starts from?
may be octobe
What is the acceleration zone?
The acceleration zone is the portion of the runup area for the pole vault, long jump, etc. where the athlete starts his run and gets up to speed.
What is the acceleration of a body which starts from rest and travels 87.5 m in 5 seconds?
distance = 1/2 acceleration x time squared; acceleration is 7 m/s/s
A body starts slipping down an incline and moves a half meter in a half second. How long will it take to move the next half meter?
It will take a half second.
