A rock climber throws a small first aid kit to another climber who is higher up the mountain. The initial velocity of the kit is 18 m/s at an angle of 74° above the horizontal. At the instant when the kit is caught, it is traveling horizontally, so its vertical speed is zero. What is the vertical height between the two climbers?

hi danny.
go to this link should help you out.
6 4V Li ion battery pack for my Rock Climber Truck Google Search

When giving physical quantities you cannot omit the units. (an angle of 10 what). You cannot solve the problem fully because you are missing the length of the pendulum.
You cannot use any kinematic relations because the expression of the period depends on the assumption that angles of rotation remain small.
You will have to use the energy conservation principle. Assuming that the mass was released with 0 initial kinetic energy, the kinetic energy at the lower point (angle 10 degrees) is equal to the change in potential energy between the release point and the point where the mass is.
(1/2)mv^2=delta Ep= Ep(30 deg)-Ep(10 deg)
Once you calculate the potential energy (see screen capture) difference you will see that it is proportional to m*g, so the mass will cancel out.
Your turn: Calculate the potential energy difference between the positions at 30 deg and 10 deg, equate the result with the kinetic energy and solve for v^2, and hence for v the tangential velocity.

That is an issue and a poor engineering design. Oddly enough though, Poulan has some trimmers (like Craftsman) which rotate clockwise, throwing debris away from the operator. A lot of their equipment has design flaws and poor engineering behind it. They intentionally make inferior parts, in the hopes that the consumer will break it and buy more of it. You probably already know this, but make sure than darn debris guard is as low as you can get it and angled in the "throw-field" to cover that debris being sent towards you.(And stay away from areal with small rocks and gravel!)

• Here is a link to the parts available from Little Tikes for your unit http://www.littletikes.com/consumerservice/ReplacementParts-detail.aspx?Product_ID=2637& unfortunately the platform is not a part they offer. Perhaps someone may sell a used one for cheaper than new but as for a replacement there is not one, sorry.

Regards, Tony

Crampons are outdoor footwear that are made from spikes and are worn on boots to provide traction on snow and ice. General-purpose crampons designed for most mountaineering and glacier travel are not well suited for vertical ice climbing. For ice climbing, specialized crampons that provide better support for front pointing are advised. Most crampons require welted boots to ensure proper fitting. Crampons with 10 points were first introduced by Europeans in the early 1900s. Because they lacked forward pointing spikes, they required step cutting on steep terrain. In the 1930s, two additional forward-slanting points were added, thus creating today's 12-point crampons. While 12-point crampons are now the normal selection, a few 10 point crampons can still be found on the market. The two additional front points further reduced step-chopping and allowed the climber to "front-point" up steep snow and ice. The angles of the first two rows of points also determine the best use for a particular set of crampons. If the first row (front points) bend downward and the second row is angled towards the toe, this reduces calf strain by allowing the boot heel to be lower. In this case, these crampons are better suited for front-pointing. When straight points are used instead, the crampons are much better suited for snow & general mountaineering. While crampons are an invaluable tool for a mountaineer, they were not used as often as today until the development of plastic-shelled climbing boots, because the straps used to affix the crampons to early mountaineering boots (which were made of leather) had a tendency to restrict bloodflow to the feet of the wearer. Crampons are usually made of hardened steel, but lighter weight aluminum crampons are popular for alpine ski touring where the need for them is less frequent & counterbalanced by the need for a light pack yielding fast, efficient travel over long distances. One problem with crampons is that snow can ball up between the spikes, creating a dangerous scenario where the teeth no longer bite into the slope. To prevent this, most crampons can be fitted with "anti-bott" plates: shaped bits of flexible plastic that engage on the body of the crampon.

This is for educational use only-hacking any software/hardware is by definition illegal. so long as you are aware of this. Hello there, google these words so that you are pointed in the right direction-----dvd+jon+iphone

This is a repair and consultation forum. Are you doing homework, or do you have a technical question on a consumer, industrial, or commercial electronic product?