Tagged Questions
2
votes
1answer
67 views
Convert a 200mm linear stroke into 90 degrees motion
Can anyone help me Convert a 200 mm linear stroke into 90 degrees motion with as much mechanical advantage as possible or into two 90 degrees motions with as much mechanical advantage as possible?
...
-2
votes
1answer
121 views
Newton first law of motion, braking suddenly in car
While driving down the road, if you hit the brakes suddenly, your body moves forward. Explain the reason for this.
1
vote
2answers
112 views
How does this chair move?
I have a chair like this(shown in figure). I was kneeling on the part where we sit. I just gave a sudden push to the part where we rest the back, without moving my legs. I found that the chair is ...
0
votes
0answers
117 views
Easy question about force on an object [closed]
Please excuse me if this is a basic question, but it has been festering in my head for quite some time.
Suppose you have an object of mass m. We apply a force with magnitude f on the obeject directly ...
0
votes
4answers
241 views
A person weighing 100 N stands on some bathroom scales in a lift. If the scales show a reading of 110 N, which way is he going
Can someone answer and explain it please.
Here are the options:
Moving downwards and decelerating.
Moving downwards with a constant velocity.
Moving upwards and decelerating.
Moving upwards with a ...
0
votes
2answers
479 views
Would this model of a boat move according to Newtons 3rd Law?
If i have a small toy boat with a sail, and i attach a fan onto it, FACING THE SAIL, which runs by solar. Once the fan turns on will the boat move or will it remain at rest. Apparently it wont because ...
1
vote
2answers
1k views
Finding distance when the force is a function of time
I'm having trouble with this homework question
A mysterious rocket-propelled object of mass 49.0 kg is initially at rest in the middle of the horizontal, frictionless surface of an ice-covered ...
0
votes
1answer
177 views
Laws of Motion: Acceleration to be applied on a free falling object to reduce velocity to 0
Assume that an object of mass 'm' is falling to the earth.The force acting on the same would be F = m*g = 10m (assuming g = 10m/s^2). In this case the velocity of the object at time 't' = 10 seconds ...
0
votes
4answers
732 views
Would you feel weightless if falling or flying up in a vacuum?
Ignoring that you can't survive in a vacuum.
If you were to jump of a ledge in a vacuum (in a vertical tube eg). While falling would you feel weightless? Surely the earths gravity is still pulling ...
2
votes
2answers
461 views
Ski Jumper's vertical velocity after 246.5m record?
What would be the vertical velocity of this ski jumper (ski flyer), after he first touches down, after he breaks the record with a 246.5m jump? What g force would he experience as he slows down?
...
0
votes
6answers
469 views
Is it possible to throw an object faster but over the same distance?
Is it possible to throw say a tennis ball at $1ms^{-1}$ for 20m and then be able to throw the same ball at $2ms^{-1}$ for 20m at the same angle? That is throwing the ball in a traditional curve withe ...
